NewHTMLDocument creates an HTML document for an about:blank page.

NewWindowReader will create a new window and load parse the HTML from the reader.

History implements the [History API] Note: Currently, state is represented by string, but may change to a different type representing a JSON object.

The PopStateEvent is emitted after navigating to the same document, and will contain possible state passed to [History.ReplaceState] or [History.PushState].